Discharge device



J. W. CARLSON DISCHARGE DEVICE Aug. 1, 1950 Filed Nov. 5, 1946 1 w M MMW w w ww 0 6 a 6v w/ w 4 a j a J i a I iatenteci Aug. 1, 1950 1'DISCHARGE "DEVICE JohnW. Carlson, Chicagoflll. Applicat ionNoveinber 5,1946;senai m: vomso V 6 'Glaims. 1 This invention relates in. generalto"flow" restrictors ordischarge devices whichlare particularly adaptedtorestrict theflow of liquids under pressure such as carbonated water.

Devices of this character have been used heretofore for dispensingcarbonated liquids in many difierent places such as" soda fountains andvending machines capable of dispensing carbonated beverages. While thedischarge device disclosed herein-islparticulafly adapted for use onsuch a carbonated beverage vending machine; it isqby no means lirnitedto such use.

i It is the. present; practice in machines ofthis character to maintaina volume of saturated or substantially saturated aqueous solution 'ofcarbonl dioxide,to'-be.. discharged into a receptacle. This-carbonatedliquid is maintained at' a high pressure and usually a low temperature.Onerof the problems which is presented in dispensing a carbonated liquidis the necessity'of discharging the solution from it's high pressure toatmospheric pressure fast enough for practical purposes and yet -slowenough-to prevent excessive aitation -and turbulence which results in .a1oss,of..-gas from the liquid. Furthermo re fine.particles-of foreignmattermaybecorne'deposited in ordinary discharge a devices tending-toclog the passages and thereby reduce the efficiency thereof.

It is common practiceto. employ some means -for disruptingthe impact ofthe issuing soluttion. Such means usually includes a"stationaryunember-to receive the impact of the solution -under pressure whichdistributes" the liquid a spray. This has been found to beunsatisfactory in actual practice not only becattsebfjthe high rate ofgas loss, but also becausethe small passage which distributes thesolution. in a' 'spray has a tendency tobecome clog'ged duetothednevitable presence of] fine particles of foreign "matter. Suchclogging necessitates ren 'ovahofthe o 1 device for cleaning.

In my present invention I have been able to overcome the variousdisadvantages mentioned above by providing a structure whichyiiill' notonly retain a high gas content ml the issuing 'soluinvention is toprovide a discharge device .for .re-

stricting the flow of a fiuidunder pressure; such as carbonated waterwhich willmininiize gas -loss and which has self -'cleaningcharacteristics.

h O jCQ iS QY provide. a flow rstrictor 5 wherein the impactmember.ragainstbwhic f fluid flowstis" movable undemthelpressure""fluidto" form a restricted.openingzriwhiclr as em cleaningzand. whicheffectively reduces rthewerlocity of fiow without anunduecagitatiomomtur- 10 bulenceithereof.

7 sum :anothercobjectds .tow zpromide lat; flowmel'strictor.'ioncdischarging fluidsisuchfaslcarbonated water-wheremitheimpact: member againsttwiiich the fluid flows-s iszimovablesunderatheapressuraiof 1 5 the fluid: :to .form la. restricted vopening; iwhereby l-the initial dischargezoflfluid .will have-a cleaning -.efiectfthereom before x therropeningv. become-serially r restricted.

Anotherobi ectxis-ltoprovide a carbonated liquid o dischargesdevicetmherein a rbqdy having. an inlet 1 s. and amoutlet :thereincontains two. membersnone rof which is: stationary.andonerofwwhiohzisimovable, the :movable .member being .mo-vableuunderfiuidcpressurei toward, the:stationaryizmemberl to thereby restrict thepassage.rtherebetweenlaiter "i therinitial::onrushxor surge oftfluidwhas-:had a cleaningaiiffech on.-.-the.= lpassage.

' Otherobjectsvandadvantages,pflthe invention Will become: apparent:uponmreading. the. :follow- 3 ing. description :taken'cinconnection-.withtthe:ac-

1 compan'yingl drawingzimwhich:

Fig. 1 is awertical'ilongitudinalrsectionzthroiigh the dischargeclevicewhereinithe passage'betwfien "trie -two members isinsits normallyopen-position;

Figi 2u= is a view :similar .to Fig.1 1:: showing a the impact. memberin tits: closedlpositiunx whereimthe passage istarestricted; l

Figi 3 isa horizontal; :transverse section. taken substantially'alongithe plane Ofiine-B-eibf E ie: 1; Fig.- 41S1.allhfll'izbn'flaljtlansversezseflfiflllmtflken .asubstantially:ralongvthe plane--of;-li-ne 41-4 of Fig. i and .E'ig: filgis-lahorizontal-transverseYsection taken substantiallyialong. theplanersofline 5-.-,.5,of mg. .1.

Thisin-ventionis amodifiedform from thatnis- ..closedin the sc-pendingapplication of; Ernest L. Wolf Ser. N 0. 100,602 filed October.2,. 19:36,, and compr.ises a :body havingan inlet. and an. outlettherein, whichbody ishollow andcontains a mov- ...able impact meinber'having... a frustro-conical .cavity therein within whiclrthefrustro-conical portion lof a stationary member extends? The two"meinbers. are normallyg spaced apart-:toprcivi'de a. passage'throughwhichtheliquidunder-pressure is for ..discharging. fluids such acarbonated water. 55. adapted to flow'whereby'the:initialsurge willflowinner edges of stationary support for the member I6.

" v A movable impact member28 is located in the upper part of the bodyand has a centrally 10- i cated downwardly extending opening .30 thereinthrough the passage unrestricted for cleaning purposes, after which thepressure of the liquid will move the impact member toward the stationarymember a limited distance to thereby restrict the passage and thefurther flow of liquid therethrough.

Referring now more particularly to the drawing, the body portion ispreferably provided in two sections, the upperfsection designated by thenumeral 2 and thelower sectionindicated at 4, for ease in assembly. Oneof these sections is internally threaded at one end thereof and theother is externally threaded to thereb provide a threaded connection 6therebetween.

The portion 2 of the body is provided with a smaller threaded section 8atone end thereof for connection with a source of liquid under pressure,which section has a passage l therethrough to permit the liquid underpressure to flow within "-thebody. The upper-section2 is tubularand thelower section 4 extends downwardlyand is tap r d as at [2, terminatingin the outlet l4. 1

- A. stationarymember l6 having an'upwardly extending frustro-conicalportion ['8 is located 1 within'the body and has a downwardly extending'frustro-conical portion 20. .Near the. lower end of'the tapered portion12 offthe lower section 4, I provide a'plurality of radially extendingsupporting ribs 22 providing passages 24 therebetween for liquid flow. Astationary member 26 of invertedconical shape is adapted to rest on thethe ribs22 and thusprovide a in alignment with the inlet It so thatfluid enterding the inlet will be directed through the passage o'ropening'30. A= frustro-conical cavity 32 is '-'cate'd within the-impactmember 28 and within "which the frustro-conical portion 18 of thestationary member l6 extends in normally spaced relation to therebprovidea passage 34 between the two members. i

The member 28 has a tight fit within the body and at its upper" end isprovided with a sealing ring-'36 in order to prevent any of the liquidunder pressure from passing between the member and-thebody. A shoulderis provided adjacent the upper end of the: opening 30 and is adapted"fto support a'ring or spider 38 which has a downwardly.extendinginternally threaded tubular 'qmember'lfl secured thereto. andwhich extends into theopening 33. A plunger 42 has-a smaller threadedend M adapted to be threadedlyengaged with the inner surface of thedownwardly extending me'mber il], which plunger extends downwardly intoacentral'opening extending lengthwise through the stationary member l6.-A stop member 4-6 extends upwardly into the central opening through thestationar member from the other end thereof and has a head 48'thereon'threadedly-engaging an enlarged portion of the central opening forpurposes of adjustment, The stop member 46 is of a smaller diameter thanthe central opening through the stationary member and thus provided anannular opening within which a coiled compression spring 50 is located.The upper end of the spring 50 norfmally bears against the lower end ofthe plunger 42 thus holding the impact member 28 in its up- 4 theclosing movement thereof in restricting the passage 34.

The operation of the device is as follows:

The device is norm-ally in the position shown in Fig. l and when aliquid under pressure such as carbonated water enters the inlet l0, itwill first pass inwardly through the opening 30 and along the passage 34to the outlet 14. The initial surge or onrush of the liquid will have acleaning effect on the passage and flush out any foreign matter whichmay be present therein. Immediately after this initial surge, however,the force of the liquid against the upper end of the plunger will movethe impact member 28 downwardly to its position as shown in Fig. 2,where the bottom of the plunger will contact the upper end of the stopmember 46, thereby providing a restricted passage 34 as shown in Fig. 2.This will permit the liquid to be ejected through the outlet l4 with aminimum loss of gas.

, If for any reason it is desired toadjust the distance through whichthe impact member 28 service man.

It will be evident that changes may be made in the form, constructionand arrangement of 1 parts from those disclosed herein without departingin any way from the spirit of the invention or sacrificing any of theattendant advantages thereof provided, however, that such changes fallwithin the scope of the claims appended hereto.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent of the United States is:

1. A carbonated liquid discharge device comprising a body having aninlet and an outlet,

, member to thereby partially close said passage and restrict the flowof liquid therethrough.

2. A carbonated liquid discharge device comprising a body having aninlet and an outlet, an'irnpact member having a frustro-conical cavitytherein movably mounted within said body, a stationary member havingafrustro-conical portion extending within said cavity and nor- 2 mallyspaced therefrom to provide a passage for liquid flow from said inlet tosaid outlet, said impact member being movable under liquid pressure fromthe inlet toward said stationary member to thereby partially close saidpassage and restrict the flow of liquid therethrough, and adjustablemeans to limit the closing movement of saidimpact member.

3. A carbonated liquid: discharge device comprising a body having aninlet andan outlet,

an impact member having a frustro-conical cavity therein movably mountedwithin said body, a stationary member having a frustroconical portionextending within said cavity and normally spaced therefrom to provide apassage for liquid flow from said inlet to said outlet, said impactmember being movable under liquid pressure from the inlet toward saidstationary member to thereby partially close said passage and restrictthe flow of liquid therethrough, and means to limit the closing movementof said impact member.

4. A carbonated liquid discharge device comprising a body having aninlet and an outlet, an impact member having a frustro-conical cavitytherein mounted within said body for longitudinal movement therein, astationary member having a frustro-conical portion extending Within saidcavity and normally spaced therefrom to provide a passage for liquidflow from said inlet to said outlet, and yieldable means normallymaintaining said members in spaced relation,

whereby the initia1 onrush of liquid under pressure from said inlet willflow through said passage unrestricted to thereby clean the passage,after which said impact member will move toward said stationary memberunder liquid pressure to thereby partially close said passage andrestrict further flow of liquid.

5. A carbonated liquid discharge device comprising a body having aninlet and an outlet, an impact member having a frustro-conical cavitytherein mounted within said body for longitudinal movement therein, astationary member having a frustro-conical portion extending within saidcavity and normally spaced therefrom to provide a passage for liquidflow from said inlet to said outlet, said impact member being movableunder liquid pressure from the inlet toward said stationary member tothereby partially close said passage and restrict the flow of liquidtherethrough, an elongated opening through said stationary member, aplunger connected to said impact member and extending into said opening,and an adjustable stop member within said opening against which saidplunger is adapted to bear to thereby limit the closing movement of saidimpact member,

6. A carbonated liquid discharge device comprising a body having aninlet and an outlet, an impact member having a frustro-conical cavitytherein mounted for longitudinal movement within said body, a stationarymember having a frustro-conical portion extending within said cavity andnormally spaced therefrom to provide a passage for liquid flow from saidinlet to said outlet, said impact member being movable under liquidpressure toward said stationary member to thereby partially close saidpassage and restrict the flow of liquid therethrough, an elongatedopening through said stationary member, a plunger connected to saidimpact member and extending into said opening from one end thereof, andan adjustable stop member extending into said opening from the other endthereof against which said plunger is adapted to bear to thereby limitthe closing movement of said impact member.

JOHN W. GARLSON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 780,986 Francis Jan. 91, 19051,699,227 Craddock Jan. 15, 1929 2,083,639 Cornelius June 15, 19372,311,381 Green Feb. 16, 1943 Certificate of Correction Patent No.2,517,083 August 1, 1950 JOHN W. OARLSON It is hereby certif ed thaterror appears in the printed specification of the above numbered patentrequiring correction as follows:

Column 5, line 10, after the word member and before the period, insertto prevent complete closure of said passage;

and that the said Letters Patent should be read as corrected above, sothat the same may conform to the record of the case in the PatentOffice.

Signed and sealed this 7th day of November, A. D. 1950.

THOMAS F. MURPHY,

Assistant Commissioner of Patents.

